Roller-timer.



W. C. KITCHELL.

ROLLER TIMER. APPLICATION FILED MAR. s, 1913.

1,086,598. Patented Feb. 10, 1914.

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W. O. KITCHELL.

ROLLER TIMER.

APPLICATION FILED MAR. 3, 1913.

1,086,598. Patented Feb. 10, 1914.

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I p ROLLER-TIMER.

Specification of Letters ratent.

Patented Feb. 10,1914.

Application filed March 3, 1913. Serial No. 751,779.

To all whom it may concern:

Be it known that I, WILLIAM C. KITOHELL, a citizen of the-United States, residing at Ormond, in the count of Volusia, State of Florida, have invente certain new and useful Improvements in Roller-Timers; and I do hereby declare the following to be a full,

clear, and exact description of the invention,

such as will enable ot ers skilled in the art to which it appertains to make and use the same.

This invention relates to gas engine timers and has for an object to provide an extremely simple timer having a novel spring pressed roller contact with the rotary contact carried by the engine shaft.

With the above object in view the invention consists of certain novel details of con struction and combination of parts hereinafter fully described and claimed, it being understood that various modifications may be made in the minor details of construction within the scope of the appended claims.

In the accompanying drawing illustrating this invention: Figure 1 is aside elevation of the device applied. Fig. 2 is a longitudinal sectional view throu h the device. Fig. 3 is a front elevation wit parts in section. Fig. 4 is a cross section on line 4-4 Fig. 1. Fig. 5 is a front elevation of a modified form of the invention. Fig. 6 is a lonitudinal sectional view through the modied form.

Referring now to the drawing in which like characters of reference designate similar parts, 10 designates a lever which is adapted to be clam ed in upright position to the engine crank s aft bearing 11 by means of a split ring clamp 12, the lever being equipped on one side with an arm 13 which is provided with an openin 14. in which is mounted a nipple nut 15 ormed of insu; lating material.

A sleeve 16 formed of metal has the lower end threaded and assed through the nipple nut 15, a nut 17 eing threaded on to the sleeve and bearing against the flange of the nipple nut, and a second nut 18 being threaded on to the sleeve and bearing against a washer 19 of insulating material that bears u on the bottom face of the arm 13 and nipple nut, the sleeve being thus securely clam ed to the arm by the nuts 17 and 18 and ing insulated therefrom by the nipple nut 15 and Washer 19. The sleeve is provided with a longitudinal slot 20 near the top.

A shaft 21 is slidably fitted in the sleeve and is held against rotation therein by means of a pin 22 that is integral with the shaft and projects into the slot 20 of the sleeve. The shaft projects below the sleeve and is terminally equipped with a fork 23 that carries a shaft 24 upon which a roller 25 1s journaled, all of these parts being of metal. The shaft is e uipped at the top with a binding post 26 y means of which the ground wlre from the coil or battery may be secured to the shaft. A helical spring 26 is seated on the shaft and is confined under tension between the nut 18 and fork of the shaft, this spring exerting a downward pressure upon the fork and holding the roller in snug enga ment with the rotary cont-act carried by that engine crank shaft.

Snugly surrounding the engine crank shaft 27 in vertical alinement with the roller is a rotary contact comprising a pair of insulating rings 28 between which is clamped a metal ring 29 that has a radial contact 30 which extends to and is exposed upon the peripheries of the insulating rings. A circular series of bolts 31 is passed through all of these rings and into the enginefly-wheel 32 to rigidly secure the disks to the flywheel.

In operation it will be seen that the ignition circuit is closed when the roller 25 comes in contact with the rotating contact 30, and further that by shiftin the lever 10 to the right or left the time 0 such contact is changed with respect to the crank shaft whereb the time of ignition is advanced or delaye In Fig. 5 is shown a modified form of the invention, in which the engine shaft is designated by the numeral 33. The timer in this instance is secured to the extreme end of the shaft and to attain this end. I provide a sleeve 34 which is secured to the shaft by Q in H. on

ing by means of screws 41 or otherwise, the

having an integral nipple 42 which surrounds the extension 36, and further having an operating lever 43 which is normally held stationary in any preferred manner and may be shifted to rotate the casing on the extension and thus advance or retard the spark, as will presently appear. A metal disk 44 is secured between a pair of insulating disks 45, and the latter clamped upon the metal disk by means of the above mentioned nut 38 which binds the disks 44 and 45 snugly together against the shoulder 46 of the extension 36, the disk 44 being provided with an extension 47 that extends to the periphery of the insulating disks 45. A metal sleeve 48 is threaded at one end through an opening 49 in the circular wall of the casing 39 and is clamped to the latter by means of nuts 50 and 51 threaded on to the sleeve against the inner and outer faces respectively of said circular wall. A cylindrical stem 52 is slidably fitted in the sleeve and projects beyond both ends of the sleeve, the outer 'ends ofthe stem being fitted with a binding post 53 to receive an ignition wire. The inner end of the stem is equipped with a fork 54 in which is revolubly mounted a roller 55 which is formed of metal and rides upon the peripheries of the insulating disks and extension 47 of the metal disk 44. A helical spring 56 is seated on the stem within the sleeve 48 and urges the roller into tight contact with the disks above described, one end of the spring bearing against a nipple nut 57 which is threaded inthe outer end of the sleeve and is locked in adjusted position by a set nut 58. But one roller and attaching means therefor is shown, so that a single spark will be produced at each revolution of the projection 4? under the roller. It is to be understood that as many rollers may be employed as will be required to produce any desired number of sparks at each revolution of the disk 44 in order to adapt the device to multi-cylinder engines. Secured within the casing 39 opposite from the spring pressedroller 55 is an abutment block 59 the inner ed e of which bears upon the peripheries of t e disks and holds the latter against dislodgment due to the pressure of the roller 55. In case a plurality of rollers are used, there is no necessity for the use of abutment blocks as above described, since the rollers counteract the effect of each other as will be understood.

What is claimed, is

1. In a timer, a supporting lever having a laterally projecting arm provided with an orifice, a tubular insulating element in said orifice having terminal flanges fitting against opposite faces of said arm, a sleeve in said element and having a threaded end projecting therethrough, set nuts threaded on said sleeve and bearing against res ective flanges of said element and adjusta 1y securing said sleeve to said arm, a s ring pressed shaft slidably and non-rotatab y fitted in said sleeve, and a contact roller carried by said shaft.

2. The combination with an engine shaft, of a sleeve fixed to the end of said shaft and having an axial cylindrical extension, said extension terminating in a reduced axial terminally threaded .stem, a casing formed of insulating material loosely mounted upon said extension and adapted to normally be held stationary thereon, a metal disk on said stem having a radial extension, insulating disks on opposite sides of said metal disk having the peripheries extending flush with the outer edge of said radial extension, and a spring pressed contact roller carried by said casing and riding upon the peripheries of said insulating disks and said extension.

In testimony whereof, I afiix my signature, in the presence of two witnesses.

WILLIAM C. KITCHELL.

Witnesses:

C. E. CARNELL, JAB. CARNELL. 

